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Paperbacks are $1.15 each, and hardcover books are $3.70. Of the 100 books sold last Tuesday morning, 95 were paperback and the rest were hardcover. What was the weighted mean price of a book?
Provide an example of a hypothesis test you could perform at work or at home. State what the Null and the Alternative hypotheses would be in your test.
a basketball coach wants to know how many free throws an nba playrs shoot during the course of an advantage pratice.
orders for a computer are summarized by the optional features that are requested. the proportion of orders with no
In 2002, Colorado experienced a drought and many towns on the front range issued either mandatory or voluntary water restrictions on outdoor watering. The data file drought .txt contains data from five front range towns on their June 2001 and June..
The probability of a river flow exceeding 2,000 cubic meters per second is 15% and the coefficient of variation of these flows is 20%. Assuming a normal distribution calculate
what is the area under the normal curve between z -1.0 and z
a sample of 9 production managers with over 15 years of experience has an average salary of 71000 and a sample standard
A statistics professor plans classes so carefully that the lenths of her class are uniformly distributed between 50.0 and 52.0 minutes. Find the probability that a given class period runs less than 51.5.
The daily food consumption for the sample averages 18.7 with SS=2475. Using a two-tailed test at the .05 level, can the researcher conclude that temperature has an effect on eating behavior?
suppose that a random sample of 100 public owner controlled companies in new zealand is found to give a mean audit
a store wishes to predict net profit as a function of sales for the next year. the following table gives the years 1998
suppose referendum to increase funding for education is on the ballot in a large town population over 100000. an exit
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